EP2594271A1 - Acide 2-[(3,5-difluoro-3'-méthoxy-1,1'-biphényl-4-YL)aminonicotinique pour le traitement du psoriasis - Google Patents

Acide 2-[(3,5-difluoro-3'-méthoxy-1,1'-biphényl-4-YL)aminonicotinique pour le traitement du psoriasis Download PDF

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EP2594271A1
EP2594271A1 EP11382356.1A EP11382356A EP2594271A1 EP 2594271 A1 EP2594271 A1 EP 2594271A1 EP 11382356 A EP11382356 A EP 11382356A EP 2594271 A1 EP2594271 A1 EP 2594271A1
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EP
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Prior art keywords
difluoro
biphenyl
methoxy
amino
psoriasis
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German (de)
English (en)
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Nuria Godessart Marina
Cristina Balague Pelaez
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Almirall SA
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Almirall SA
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Priority to EP11382356.1A priority Critical patent/EP2594271A1/fr
Priority to PCT/EP2012/073278 priority patent/WO2013076170A1/fr
Priority to ARP120104381A priority patent/AR088943A1/es
Publication of EP2594271A1 publication Critical patent/EP2594271A1/fr
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
    • A61K31/455—Nicotinic acids, e.g. niacin; Derivatives thereof, e.g. esters, amides
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
    • A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/0012—Galenical forms characterised by the site of application
    • A61K9/0014—Skin, i.e. galenical aspects of topical compositions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • A61P17/06—Antipsoriatics

Definitions

  • the present invention provides 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid, or a pharmaceutically acceptable salt or N-oxide or solvate or deuterated derivative thereof, for use in the treatment of psoriasis.
  • Psoriasis is a common, chronic, inflammatory disease of the skin. Psoriasis affects about 2-3% of the population in the United Kingdom ( Laws, P M et al., Clinical, Cosmetic and Investigational Dermatology 2010:3, 25-37 ) and it is the most prevalent immune-mediated disease in adults. It is a disabling disease that has important social, psychological and economic consequences. At present, there is no cure for psoriasis and patients face a need for life-long treatment. The impact of psoriasis in quality of life is reported to be comparable to that observed in other chronic conditions such as diabetes and depression. Epidemiologic studies indicate that psoriasis is frequently associated with other chronic inflammatory diseases like arthritis or colitis.
  • the first manifestation of psoriasis may occur at any age but frequently begins in late adolescence or early adulthood. Duration may vary but usually persists for life. The clinical course is unpredictable but in the majority of cases psoriasis is a chronically remitting and relapsing disease.
  • the diagnostic of psoriasis is clinical and histological confirmation is normally not necessary.
  • the most characteristic lesions consist of chronic, sharply demarcated dull-red scaly plaques, particularly on extensor part of limbs and the scalp.
  • Psoriasis is a clinically heterogeneous disease, with varying degrees of severity and a wide array of presentations in different patients. Clinical classification ranges from mild disease, where skin plaques cover less than 3% of the body surface area, through moderate disease (3-10%) and up to severe disease where more than 10% of the body surface area is affected.
  • Treatment regimens may clear the skin but recurrences are frequent and many patients require repeat treatment. This emphasizes the importance of considering the risk-benefit profiles of the therapies.
  • topical therapy is preferred over systemic therapy due to the fact that the skin may be treated topically with treatment delivered directly to the desired site of action, thereby avoiding, or at least attenuating, the potential systemic side effects.
  • topical therapy is generally the most appropriate and several options are available. These include salicylic acid, steroids (clobetasol, bethametasone), vitamin D analogs (calcipotriol), retinoids (tazarotene), dithranol, coal tar extracts or combinations of any of these agents ( Murphy et al., JEADV 2011, 25, [Suppl. 4], 3-8 ).
  • Corticosteroids alone or in combination with vitamin D analogs are among the most effective topical treatments of psoriasis.
  • long term use of corticosteroids may be associated with cutaneous adverse events such as skin atrophy and development of striae.
  • Another major problem is tachiphylaxis or reduction of efficacy of a corticosteroid after prolonged use.
  • calcipotriol commonest side effects are irritation, primarily on the face and intertriginous sites. If large quantities of calcipotriol are applied, absorption of this vitamin D analogue can result in hypercalcaemia ( Lebwohl M et al., Ann Rheum Dis 2005; 64 [Suppl II]: ii83-ii86 ).
  • Systemic therapies include fumaric acid esters (FAEs), methotrexate (MTX) or cyclosporine A, as well as biological agents (ustekinumab, infliximab, adalimumab).
  • FAEs fumaric acid esters
  • MTX methotrexate
  • cyclosporine A as well as biological agents
  • biological agents ustekinumab, infliximab, adalimumab.
  • systemic therapies are associated to a higher risk of side effects: cyclosporine is nephrotoxic and strongly immunosuppressive and methotrexate is hepatotoxic ( Lebwohl M et al., Ann Rheum Dis 2005; 64 [Suppl II]: ii83-ii86 ).
  • Leflunomide (4-Isoxazolecarboxamide, 5-methyl-N-[4-(trifluoromethyl)phenyl]-; CAS RN 75706-12-6) is the only dihydroorotate dehydrogenase (DHODH) inhibitor currently in the market. It was approved by the European Medicines Agency (EMA) for the systemic treatment of rheumatoid arthritis (RA) and psoriatic arthritis (PsA). Leflunomide is an inactive prodrug that is converted into teriflunomide, the active metabolite.
  • DHODH dihydroorotate dehydrogenase
  • 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid in contrast to leflunomide, does not show an increase in the levels of transaminases and bilirrubin in plasma in an in vivo model of hepatotoxicity assessment in mice, in which test compounds are administered by intraperitoneal route to maximise liver exposure.
  • 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid is able to reduce epidermal hyperplasia and dermal inflammation following its topical skin application and, therefore, is useful in the treatment of psoriasis.
  • the present invention therefore provides 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid, or a pharmaceutically acceptable salt or N-oxide or solvate or deuterated derivative thereof, for use in the treatment of psoriasis.
  • the invention further relates to a topical pharmaceutical composition
  • a topical pharmaceutical composition comprising 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid, or a pharmaceutically acceptable salt or N-oxide or solvate or deuterated derivative thereof, alone or in combination with one or more active ingredients for use in the treatment of psoriasis.
  • the invention further relates to a method for treating a subject afflicted with psoriasis, which comprises applying to the affected area of the skin of said subject an effective amount of 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid, or a pharmaceutically acceptable salt or N-oxide or solvate or deuterated derivative thereof, alone or in combination with one or more active ingredients.
  • the invention further relates to the use of 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid, or a pharmaceutically acceptable salt or N-oxide or solvate or deuterated derivative thereof, for the manufacture of a medicament for the treatment of psoriasis.
  • the present invention provides 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid, or a pharmaceutically acceptable salt or N-oxide or solvate or deuterated derivative thereof, for use in the treatment of psoriasis.
  • psoriasis for use in the treatment of plaque psoriasis or psoriasis vulgaris, guttate psoriasis, inverse psoriasis, erthrodermic psoriasis, psoriatic arthritis, scalp psoriasis and nail psoriasis.
  • WO 2010/102826 A1 describes the L-arginine, meglumine or tromethamine salt of 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid.
  • treatment refers to the treatment of a disease or medical condition in a human patient which includes:
  • the term pharmaceutically acceptable salt embraces salts with a pharmaceutically acceptable acid or base.
  • Pharmaceutically acceptable acids include both inorganic acids, for example hydrochloric, sulphuric, phosphoric, diphosphoric, hydrobromic, hydroiodic and nitric acid and organic acids, for example citric, fumaric, maleic, malic, mandelic, ascorbic, oxalic, succinic, tartaric, benzoic, acetic, methanesulphonic, ethanesulphonic, benzenesulphonic, cyclohexylsulfamic (cyclamic) or p-toluenesulphonic acid.
  • Pharmaceutically acceptable bases include alkali metal (e.g. sodium or potassium) and alkali earth metal (e.g. calcium or magnesium) hydroxides and organic bases, for example alkyl amines, arylalkyl amines and heterocyclic amines.
  • X- may be an anion of various mineral acids such as, for example, chloride, bromide, iodide, sulphate, nitrate, phosphate, or an anion of an organic acid such as, for example, acetate, maleate, fumarate, citrate, oxalate, succinate, tartrate, malate, mandelate, trifluoroacetate, methanesulphonate and p-toluenesulphonate.
  • mineral acids such as, for example, chloride, bromide, iodide, sulphate, nitrate, phosphate
  • organic acid such as, for example, acetate, maleate, fumarate, citrate, oxalate, succinate, tartrate, malate, mandelate, trifluoroacetate, methanesulphonate and p-toluenesulphonate.
  • X- is preferably an anion selected from chloride, bromide, iodide, sulphate, nitrate, acetate, maleate, oxalate, succinate or trifluoroacetate. More preferably X- is chloride, bromide, trifluoroacetate or methanesulphonate.
  • an N-oxide is formed from the tertiary basic amines or imines present in the molecule, using a convenient oxidising agent.
  • solvate means a compound which further includes a stoichiometric or non-stoichiometric amount of solvent such as water, acetone, ethanol, methanol, dichloromethane, 2-propanol, or the like, bound by non-covalent intermolecular forces.
  • solvent such as water, acetone, ethanol, methanol, dichloromethane, 2-propanol, or the like, bound by non-covalent intermolecular forces.
  • solvent is water
  • hydrate is used instead of solvate.
  • deuterated derivative embraces compounds of the invention where in a particular position at least one hydrogen atom is replaced by deuterium.
  • Deuterium (D or 2H) is a stable isotope of hydrogen which is present at a natural abundance of 0.015 molar %.
  • Hydrogen deuterium exchange (deuterium incorporation) is a chemical reaction in which a covalently bonded hydrogen atom is replaced by a deuterium atom. Said exchange (incorporation) reaction can be total or partial.
  • a deuterated derivative of a compound of the invention has an isotopic enrichment factor (ratio between the isotopic abundance and the natural abundance of that isotope, i.e. the percentage of incorporation of deuterium at a given position in a molecule in the place of hydrogen) for each deuterium present at a site designated as a potential site of deuteration on the compound of at least 3500 (52.5% deuterium incorporation).
  • isotopic enrichment factor ratio between the isotopic abundance and the natural abundance of that isotope, i.e. the percentage of incorporation of deuterium at a given position in a molecule in the place of hydrogen
  • the isotopic enrichment factor is at least 5000 (75% deuterium). In a more preferred embodiment, the isotopic enrichment factor is at least 6333.3 (95% deuterium incorporation). In a most preferred embodiment, the isotopic enrichment factor is at least 6633.3 (99.5% deuterium incorporation). It is understood that the isotopic enrichment factor of each deuterium present at a site designated as a site of deuteration is independent from the other deuteration sites.
  • the isotopic enrichment factor can be determined using conventional analytical methods known to an ordinary skilled in the art, including mass spectrometry (MS) and nuclear magnetic resonance (NMR).
  • MS mass spectrometry
  • NMR nuclear magnetic resonance
  • 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid is in the form of a free acid, ie. no addition salt is formed.
  • the 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid is in the form of a L-arginine, meglumine or tromethamine salt, ie.
  • 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid or a pharmaceutically acceptable salt or N-oxide or solvate or deuterated derivative thereof, is administered in a suitable form for oral, inhalation, topical, transdermal, nasal, rectal, percutaneous or injectable administration.
  • topical administration describes a route of introducing drugs into the body in which the drug is applied to the skin (cutaneously) for a local (topical) effect, with little or no systemic absorption of the drug.
  • the topical pharmaceutical composition is a topical pharmaceutical composition.
  • the invention further relates to a topical pharmaceutical composition
  • a topical pharmaceutical composition comprising 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid, or a pharmaceutically acceptable salt or N-oxide or solvate or deuterated derivative thereof in association with a pharmaceutically acceptable vehicle or carrier, for the treatment of psoriasis; in particular, for use in the treatment of plaque psoriasis or psoriasis vulgaris, guttate psoriasis, inverse psoriasis, erthrodermic psoriasis, psoriatic arthritis, scalp psoriasis and nail psoriasis.
  • Carrier or vehicle refers to carrier material suitable for dermal drug administration and includes any such material known in the art, e.g. any liquid, gel, solvent, liquid diluent, solubilizer or the like, which does not interact with other components of the composition in a deleterious manner. Examples of suitable carriers can be found at Martindale - The complete drug reference, 32nd edition, 1999 .
  • Suitable pharmaceutically acceptable carriers or vehicles according to the invention are water, petroleum hydrocarbons (mineral oils, paraffins and waxes), animal and vegetable fats and oils, fatty acids, fatty alcohols, non-ionic surfactants, natural waxes, silicones and polyols, or mixtures thereof.
  • Suitable petroleum hydrocarbons i.e. mineral oils, paraffins and waxes from petroleum according to the present invention are: hard paraffin, liquid paraffin (Liquid Petrolatum or Paraffinum Liquidum), light liquid paraffin (Light Liquid Petrolatum or Paraffinum Perliquidium), white soft paraffin (White Petrolatum), yellow soft paraffin (Yellow Petrolatum), macrocrystalline paraffin waxes (which are mixtures which consist mainly of saturated C 18 -C 30 hydrocarbons and smaller amounts of iso-alkanes and cycloalkanes with a molecular weight comprised between 250 and 450 g/mol and, although they are solids at room temperature, they have low melting points, usually comprised between 40°C and 60°C), microcrystalline paraffines waxes (which consist of C 40 -C 55 compounds which contain, in addition to normal hydrocarbons, large amounts of iso-alkanes and naphtenes with long alkyl side-chains, the iso
  • Suitable animal or vegetable fats and oils are esters of linear and/or branched, saturated and/or unsaturated alkanecarboxylic acids with a chain length of 1 up to 30 carbon atoms and linear and/or branched, saturated and/or unsaturated alcohols with a chain length of 1 up to 30 carbon atoms; or are esters of aromatic carboxylic acids and linear and/or branched, saturated and/or unsaturated alcohols with a chain length of 1 up to 30 carbon atoms.
  • oils can be advantageously selected from the group consisting of isopropyl myristate, isopropyl palmitate, isopropyl stearate, isopropyl oleate, n-butyl stearate, n-hexyl laurate, n-decyl oleate, isooctyl stearate, isononyl stearate, isononyl isononanoate, 2-ethylhexyl laurate, 2-ethylhexyl palmitate, 2-ethylhexyl cocoate, 2-hexyldecyl stearate, 2- ethylhexyl isostearate, 2-octyldodecyl palmitate, cetyl palmitate, oleyl oleate, oleyl erucate, erucyl oleate, erucyl erucate, as well as synthetic, semisynthetic and
  • oils of the type of esters of saturated alkanecarboxylic acids and alcohols are fatty acid methyl esters, preferably C 6 -C 24 fatty acid methyl esters from animal and vegetable fats and oils such as cotton, safflower, coconut, rapeseed, linseed, palm, palm kernel, sunflower, olein, olive, olive pomace, castor oil, tallow, soy, tall oil, etc, possibly totally or partially hydrogenated, as well as purified or synthetic fatty acids such as caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid (cetylic acid), palmitoleic acid, stearic acid, isostearic acid, 2-ethylhexanoic acid, oleic acid, ricinoleic acid, elaidic acid, petroselinic acid, linoleic acid, linolenic acid, arachidic acid, gadoleic acid, behe
  • Suitable animal or vegetable fats and oils are fatty acid triglycerides, specifically triglycerin esters of linear and/or branched, saturated and/or unsaturated alkanecarboxylic acids with a chain length of 6 up to 24 carbon atoms, preferably of 10 up to 18 carbon atoms.
  • the fatty acids esterifying the different positions of glycerin can be different, giving rise to a large amount of possible combinations, including positional combinations.
  • the position of the different fatty acids in natural triglycerides is not random, but rather it depends on the origin of the fat.
  • the triglycerides more simple are those constituted by a sole fatty acid.
  • Fatty acid triglycerides can be advantageously chosen, for example, from the group consisting of synthetic, semi-synthetic and natural oils, as for example, animal fats and oils such as cow tallow, pig lard, bone oil, aquatic animal fats and oils (fish, such as herring, cod or sardine; cetaceans; etc.); and vegetable fats and oils such as avocado oil, almond oil, hazelnut oil, babassu palm oil, borage oil, peanut oil, canola oil, hemp oil, milk thistle oil, safflower oil, chufa oil, coconut oil, rapeseed oil, black cumin oil, wheat germ oil, sunflower oil, linseed oil, macadamia nut oil, corn oil, walnut oil, olive oil and its by-products such as olive pomace oil, palm oil and its fractions such as palm olein and palm stearin, evening primrose oil, rosehip oil, castor oil, rice bran oil, apricot kernel oil,
  • Suitable fatty acids according to the present invention are C 6 -C 24 fatty acids from vegetable and animal fats and oils, such as those previously described, such as cotton, safflower, coconut, rapeseed, linseed, palm, palm kernel, sunflower, olein, olive, olive pomace, castor oil, tallow, soy, tall oil, etc, possibly totally or partially hydrogenated, as well as purified or synthetic fatty acids such as caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic (cetylic) acid, palmitoleic acid, stearic acid, isostearic acid, 2-ethylhexanoic acid, oleic acid, ricinoleic acid, elaidic acid, petroselinic acid, linoleic acid, linolenic acid, arachidic acid, gadoleic acid, behenic acid and erucic acid, or or technical grade mixtures thereof.
  • Fatty acids of the lauric, myristic, palmitic, palmitoleic, stearic, isostearic, 2-ethylhexanoic, oleic, ricinoleic, behenic type, or mixtures thereof are preferred, in particular, those from vegetable origin.
  • Suitable fatty alcohols according to the present invention are C 6 -C 24 fatty alcohols from vegetable and animal fats and oils such as those previously described, such as cotton, safflower, coconut, rapeseed, linseed, palm, palm kernel, sunflower, olein, olive, olive pomace, castor oil, tallow, soy, tall oil, etc, possibly totally or partially hydrogenated, as well as purified or synthetic fatty alcohols such as caproyl alcohol, capryl alcohol, capric alcohol, lauryl alcohol, myristyl alcohol, palmytil (cetyl) alcohol, palmitoyl alcohol, stearyl alcohol, isostearyl alcohol, 2-octyldodecanol, 2-ethylhexanoyl alcohol, oleyl alcohol, ricinoleyl alcohol, elaidyl alcohol, petroselinic alcohol, linoleyl alcohol, linolenyl alcohol, arachidyl alcohol, gadoley
  • Fatty alcohols of the lauryl, myristyl, palmityl, palmitoleyl, stearyl, isostearyl 2-ethylhexanoyl, oleyl, ricinoleyl and behenyl type, or technical grade mixtures thereof such as cetostearyl alcohol are preferred, in particular, those from vegetable origin.
  • Suitable non-ionic surfactants according to the present invention are acetoglycerides; diacetylated monoglycerides; mono- and di-acetylated monoglycerides; mono- and diglycerides (such as glyceryl monobehenate, glyceryl dibehenate, glyceryl monooleate, glyceryl dioleate, glyceryl monostearate, glyceryl distearate, glyceryl monopalmitosteareate or glyceryl dipalmitosteareate); esters of ethylene glycol or propylene glycol with C 6 -C 22 fatty acids (such as ethylene glycol monopalmitostearate, ethylene glycol monostearate, propylene glycol monocaprylate, propylene glycol dicaprylate, propylene glycol dicaprylocaprate, propylene glycol monopalmitostearate, propylene glycol monostearate or propylene glycol alg
  • Preferred non-ionic surfactants according to the present invention are mono- and diglycerides (such as glyceryl monobehenate, glyceryl dibehenate, glyceryl monooleate, glyceryl dioleate, glyceryl monostearate, glyceryl distearate, glyceryl monopalmitosteareate or glyceryl dipalmitosteareate); esters of ethylene glycol or propylene glycol with C 6 -C 22 fatty acids (such as ethylene glycol monopalmitostearate, ethylene glycol monostearate, propylene glycol monocaprylate, propylene glycol dicaprylate, propylene glycol dicaprylocaprate, propylene glycol monopalmitostearate, propylene glycol monostearate or propylene glycol alginate); polyoxyethylene alkyl ethers [polyoxyethylene glycol ethers of n-alcohols such as lauryl,
  • Suitable natural waxes are the candelilla wax, carnauba wax, Japan wax, esparto wax, cork wax, guaruma wax, rice wax, sugar cane wax, ouricury wax, montan wax, beeswax, shellac wax, espermaceti, wool lanolin (wax), uropygial fat wax, ceresin waxes, peat waxes, ozokerite, as well as chemically modified waxes (hard waxes) for example, montan wax esters, waxes obtained by the Fischer-Tropsch process, hydrogenated jojoba waxes and synthetic waxes.
  • Silicones suitable according to the present invention are cyclic and/or linear silicones, which can be found as monomers generally characterized by structural elements such as: where the silicon atoms can be substituted by alkyl or aryl radicals equal or different, represented here generally by R 1 -R 4 groups.
  • Linear silicones with siloxane units suitable according to the present invention are generally characterized by structural elements such as: where the silicon atoms can be substituted by alkyl or aryl radicals equal or different, are represented here in general by R 1 -R 4 groups (meaning the number of different radicals is not necessarily limited to 4), m can take values from 2 to 200.000.
  • Cyclic silicones suitable according to the present invention are generally characterized by structural elements such as: where the silicon atoms can be substituted by alkyl or aryl radicals equal or different, represented here generally by R 1 -R 4 groups (meaning the number of different radicals is not necessarily limited to 4), n can take values of 3/2 to 20. Fractional values of n indicate that it may be odd numbers of siloxane groups present in the ring.
  • cyclic methyl siloxane having the formula [(CH 3 ) 2 SiO] x in which x is 3-6, or short chain linear methyl siloxanes having the formula ((CH 3 ) 2 SiO[(CH 3 ) 2 SiO] y Si(CH 3 ) 3 in which y is 0-5.
  • Suitable cyclic methyl siloxanes are hexamethylcyclotrisiloxanes (D3), a solid with a boiling point of 134oC and the formula [(Me 2 )SiO] 3 ; octamethylcyclotetrasiloxane (D4) with a boiling point of 176oC, a viscosity of 2.3 mm 2 /s, and the formula [(Me 2 )SiO] 4 ; decamethylcyclopentasiloxane (D5) (cyclomethicone) with a boiling point of 210oC, a viscosity of 3.87 mm 2 /s, and the formula [(Me 2 )SiO] 5 ; and dodecamethylcyclohexasiloxane (D6) with a boiling point of 245oC, a viscosity of 6.62 mm 2 /s and the formula [(Me 2 )SiO] 6 .
  • D3 he
  • Some suitable short linear methyl siloxane are hexamethyldisiloxane (MM) with a boiling point of 100oC, viscosity of 0-65 mm 2 /s, and formula Me 3 SiOMe 3 ; octamethyltrisiloxane (MDM) with a boiling point of 152oC, viscosity of 1.04 mm 2 /s, and formula Me 3 SiOMe 2 SiOSiMe 3 ; decamethyltetrasiloxane (MD2M) with a boiling point of 194oC, viscosity of 1.53 mm 2 /s, and formula Me 3 SiO(MeSiO) 2 SiMe 3 ; dodecamethylpentasiloxane (MD3M) with a boiling point of 229oC, viscosity of 2.06 mm 2 /s, and formula Me 3 SiO(Me 2 SiO) 3 SiMe 3 ; tetradecamethylhexasiloxane (
  • long chain linear siloxanes such as phenyltrimethicone, bis(phenylpropyl)dimethicone, dimethicone, dimethiconol, cyclomethicone (octametilciclotetrasiloxane), hexamethylcyclotrisiloxane, poly(dimethylsiloxane), cetyldimethicone and behenoxy dimethicone are also included.
  • mixtures of cyclomethicone and isotridecyl isononanoate and of cyclomethicone and 2-ethylhexyl isostearate are also suitable silicones according to the invention.
  • Suitable polyols according to the present invention are preferably water-soluble polyols such as polyhydric alcohols with two or more hydroxyl groups in their molecule.
  • Specific examples can include ethylene glycol, propylene glycol, 1,3- butylene glycol, 1,4-butylene glycol, hexylene glycol, dipropylene glycol, polyethylene glycol with average molecular weights by weight ranging between 100 and 1000, glucose, fructose, galactose, mannose, ribose, erythrose, maltose, maltitose, maltotriose, sucrose, xylitol, sorbitol, threitol, erythritol, glycerol, polyglycerol and starch alcohols.
  • Preferred polyols according to the present invention are ethylene glycol, propylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, hexylene glycol, dipropylene glycol, polyethylene glycol with average molecular weights by weight ranging between 100 and 1000, glycerol, polyglycerol, and mixtures thereof.
  • Particularly preferred polyols according to the present invention are 1,3-butylene glycol, 1,4-butylene glycol, hexylene glycol, dipropylene glycol, glycerol, and mixtures thereof.
  • the pH value of the topical pharmaceutical composition according to the invention is typically within the acceptable range for topical administration, and is preferably in the range of 3.0 to 9.0, more preferably in the range of 3.5 to 7.5.
  • the topical pharmaceutical composition according to the invention is formulated in the form of a cream, a gel, an oleogel, an ointment, a paste, a suspension, a lotion, a foam, a spray, an aerosol or a solution.
  • the viscosity of the topical pharmaceutical composition according to the invention will depend on the form of the composition.
  • the topical pharmaceutical compositions according to the invention may optionally further comprise one or more active ingredients selected from the group consisting of (a) antibiotics, (b) antifungal agents, (c) antihistamine agents, (d) antimetabolites, (e) corticosteroids, (f) immunosuppressants, (g) nonsteroidal anti-inflammatory drugs (NSAIDs), (h) vitamin A analogues and (i) vitamin D analogues.
  • active ingredients selected from the group consisting of (a) antibiotics, (b) antifungal agents, (c) antihistamine agents, (d) antimetabolites, (e) corticosteroids, (f) immunosuppressants, (g) nonsteroidal anti-inflammatory drugs (NSAIDs), (h) vitamin A analogues and (i) vitamin D analogues.
  • antifungal agents for use in the context of the present invention include, but are not limited to amphotericin B, bifonazole, caspofungin, clotrimazole, echinocandin B, econazole, fluconazole, flucytosine, itraconazole, ketoconazole, miconazole, posaconazole, ravuconazole, terbinafine, tioconazole, voriconazole and combinations thereof.
  • antihistamine agents for use in the context of the present invention include, but are not limited to clemastine, diphenhydramine (benadryl), doxylamine, loratadine, desloratadine, fexofenadine, pheniramine, cetirizine, ebastine, promethazine, chlorpheniramine, levocetirizine , olopatadine, quetiapine, meclizine, dimenhydrinate, embramine, dimethindene, dexchlorpheniramine, cimetidine, famotidine, ranitidine, nizatidine, roxatidine, lafutidine, A-349,821, ABT-239, ciproxifan, clobenpropit, thioperamide, JNJ 7777120, VUF-6002 and combinations thereof.
  • Suitable antimetabolites include, but are not limited to methotrexate, 6-mercaptopuhne riboside, mercaptopurine, 5-fluorouracil (5-FU) alone or in combination with leucovorin, tegafur, UFT, doxifluhdine, carmofur, cytarabine, cytarabine ocfosfate, enocitabine, S-1 , Alimta (premetrexed disodium, LY231514, MTA), Gemzar (gemcitabine, Eli Lilly), fludarabin, 5-azacitidine, capecitabine, cladribine, clofarabine, decitabine, eflornithine, ethynylcytidine, cytosine arabinoside, hydroxyurea, TS-1 , melphalan, nelarabine, nolatrexed, ocfosfate,
  • corticosteroids and glucocorticoids for use in the context of the present invention include, but are not limited to prednisolone, methylprednisolone, dexamethasone, dexamethasone cipecilate, naflocort, deflazacort, halopredone acetate, budesonide, beclomethasone dipropionate, hydrocortisone, triamcinolone acetonide, fluocinolone acetonide, fluocinonide, clocortolone pivalate, methylprednisolone aceponate, dexamethasone palmitoate, tipredane, hydrocortisone aceponate, prednicarbate, alclometasone dipropionate, halometasone, methylprednisolone suleptanate, mometasone furoate, rimexolone, prednisolone farnes
  • Preferred corticosteroids and glucocorticoids are prednisolone, prednicarbate, mometasone furoate, betamethasone dipropionate and derivatives, esters, salts and mixtures thereof, and combinations thereof.
  • immunosupressants examples include, but are not limited to imiquimod, picremolimus, tacrolimus, cyclosporine A, anti-TNF agents, and combinations thereof.
  • a preferred immunosupressant is imiquimod.
  • NSAIDs nonsteroidal anti-inflammatory drugs
  • suitable nonsteroidal anti-inflammatory drugs include, but are not limited to oxicams, piroxicam, meloxicam, isoxicam, tenoxicam, sudoxicam, CP-14,304, salicylates, aspirin (acetylsalicylic acid), disalcid, benorylate, trilisate, safapryn, solprin, diflunisal, fendosal, acetic acid derivatives, aceclofenac, diclofenac, fenclofenac, indomethacin, sulindac, tolmetin, isoxepac, furofenac, tiopinac, zidometacin, acematacin, fentiazac, zomepirac, clindanac, oxepinac, felbinac, etodolac, ketorolac, fenamates, mefenamic
  • Preferred NSAIDs are aspirin (acetylsalicylic acid), aceclofenac, diclofenac, and derivatives, esters, salts and mixtures thereof, and combinations thereof.
  • a preferred NSAID is diclofenac sodium.
  • vitamin A analogues for use in the context of the present invention include, but are not limited to acitretin, adapalene, alitretinoin, bexarotene, fenretinide, isotretinoin, retinal, retinol, tazarotene, tretinoin and derivatives, esters, salts and mixtures thereof, and a combination thereof.
  • Preferred vitamin A analogues are bexarotene, tazarotene and tretinoin.
  • vitamin D analogues for use in the context of the present invention include, but are not limited to alfacalcidol, calcipotriol, calcitriol, dihydrotachysterol-2, doxercalciferol, holecalciferol, 22-oxacalcitriol, paracalcitol, seocalcitol (EB 1089), tacalcitrol, and combinations thereof.
  • the topical pharmaceutical compositions according to the invention may optionally further comprise other well-known pharmaceutically and/or cosmetically acceptable additives, such as, e.g. anti-irritants, antioxidants, buffering agents (pH adjusting agents), chelating agents, emollients, penetration enhancing agents, preservative agents, solubilizing agents, thickening agents, wetting agents, and the like, or mixtures thereof.
  • other well-known pharmaceutically and/or cosmetically acceptable additives such as, e.g. anti-irritants, antioxidants, buffering agents (pH adjusting agents), chelating agents, emollients, penetration enhancing agents, preservative agents, solubilizing agents, thickening agents, wetting agents, and the like, or mixtures thereof.
  • Suitable anti-irritants are aloe vera, chamomile, alpha-bisabolol, cola nitida extract, green tea extract, tea tree oil, licoric extract, batyl alcohol ( ⁇ -octadecyl glyceryl ether), selachyl alcohol ( ⁇ -9-octadecenyl glyceryl ether), chimyl alcohol ( ⁇ -hexadecyl glyceryl ether), panthenol, allantoin, caffeine or other xanthines, glycyrrhizic acid and derivatives thereof, and mixtures thereof.
  • Antioxidants used can be any antioxidants which are suitable or customary for cosmetic and/or dermatological applications. Suitable antioxidants are advantageously selected from the group consisting of amino acids (for example glycine, histidine, tyrosine, tryptophan) and derivatives thereof, imidazoles (e.g. urocanic acid) and derivatives thereof, peptides such as D,L-carnosine, D-carnosine, L-carnosine and derivatives thereof (e.g. anserine), carotenoids, carotenes (e.g. ⁇ -carotene, ⁇ -carotene, lycopene) and derivatives thereof, lipoic acid and derivatives thereof (e.g.
  • amino acids for example glycine, histidine, tyrosine, tryptophan
  • imidazoles e.g. urocanic acid
  • peptides such as D,L-carnosine, D-carnosine, L-carnosine and derivatives thereof
  • thiols e.g. thioredoxin, glutathione, cysteine, cystine, cystamine and the glycosyl, N-acetyl, methyl, ethyl, propyl, amyl, butyl and lauryl, palmitoyl, oleyl, ⁇ -linoleyl, cholesteryl and glyceryl esters thereof
  • salts thereof dilauryl thiodipropionate, distearyl thiodipropionate, thiodipropionic acid and derivatives thereof (esters, ethers, peptides, lipids, nucleotides, nucleosides and salts) and sulphoximine compounds (e.g.
  • buthionine sulphoximines in very small tolerated doses (e.g. pmol to ⁇ mol/kg), also (metal) chelating agents (e.g. ⁇ -hydroxy fatty acids, palmitic acid, phytic acid, lactoferrin), ⁇ -hydroxy acids (e.g.
  • citric acid citric acid, lactic acid, malic acid
  • humic acid bile acid, bile extracts, bilirubin, biliverdin, EDTA, EGTA and derivatives thereof
  • unsaturated fatty acids and derivatives thereof e.g. ⁇ -linolenic acid, linoleic acid, oleic acid
  • folic acid and derivatives thereof ubiquinone and ubiquinol and derivatives thereof
  • vitamin C and derivatives e.g. ascorbyl palmitate, Mg ascorbyl phosphate, ascorbyl acetate
  • tocopherols and derivatives e.g.
  • vitamin E acetate vitamin E acetate
  • zinc and derivatives thereof e.g. ZnO, ZnSO 4
  • selenium and derivatives thereof
  • any pharmaceutically acceptable buffering agents to adjust the pH of the topical pharmaceutical compositions according to the invention to be within the acceptable range for topical administration preferably in the range of 3.0 to 9.0, more preferably in the range of 3.5 to 7.5, can be used.
  • a pharmaceutically acceptable acid such as acetic, citric, fumaric, phosphoric, hydrochloric, lactic or nitric acids or the like, or a mixture thereof.
  • an acidic buffer system is present in the composition to achieve the desired pH.
  • An acidic buffer system comprises an acidulant and a buffering agent.
  • Suitable acidulants will be known to those of skill in the art and illustratively include acetic, citric, fumaric, hydrochloric, phosphoric, lactic and nitric acids and the like, and mixtures thereof.
  • Suitable buffering agents will likewise be known to those of skill in the art and illustratively include potassium metaphosphate, potassium phosphate, sodium phosphate, sodium acetate, sodium citrate and the like, and mixtures thereof.
  • Suitable emollients which can be used in the composition of the present invention include, for example, dodecane, squalane, cholesterol, isohexadecane, isononyl isononanoate, PPG Ethers, petrolatum, lanolin, safflower oil, castor oil, coconut oil, cottonseed oil, palm kernel oil, palm oil, peanut oil, soybean oil, polyol carboxylic acid esters, derivatives thereof, and the like, and combinations thereof.
  • Suitable penetration enhancing agents can include, e.g., dimethylsulfoxide (DMSO), N-methyl pyrrolidine, dimethyl formamide (DMF), allantoin, urazole, N,N-dimethylacetamide (DMA), decylmethylsulfoxide, polyethylene glycol monolaurate, propylene glycol, propylene glycol monolaurate, glycerol monolaurate, lecithin, the 1-substituted azacycloheptan-2-ones, particularly 1-n-dodecylcyclazacycloheptan-2-one, alcohols, glycerin, hyaluronic acid, transcutol, and the like, and combinations thereof.
  • Certain oil components e.g., certain vegetable oils such as, e.g., safflower oil, cottonseed oil and corn oil also can exhibit penetration enhancing properties.
  • preservatives to prevent microbial contamination examples include alkylparabens, particularly methylparaben, propylparaben and butylparaben; benzalkonium chloride; benzethonium chloride; benzoic acid; benzyl alcohol; sodium benzoate; bronopol; butylated hydroxy toluene; butylated hydroxyanisole; cetrimide; chlorobutanol; chlorocresol; chlorhexidine; dehydroacetic acid; ethylenediamine tetraacetic acid; paraben esters; phenylethylalcohol; phenol; phenoxyethanol; sorbic acid; potassium sorbate; and mixtures thereof.
  • the amount of preservative generally utilized will vary depending upon the preservative selected.
  • solubilizing agents are, for example, nonionic surfactants from at least one of the following groups: products of the addition of 1 to 30 moles of ethylene oxide and/or 0 to 5 moles of propylene oxide onto linear C 8 -C 22 fatty alcohols, C 12 -C 22 fatty acids and alkyl phenols containing 8 to 15 carbons in the alkyl group; alkyl and/or alkenyl oligoglycosides containing 8 to 22 carbons in the alkyl group and ethoxylated analogs thereof; addition products of 1 to 15 moles of ethylene oxide with castor oil and/or hydrogenated castor oil; addition products of 15 to 60 moles of ethylene oxide with castor oil and/or hydrogenated castor oil; partial esters of glycerol and/or sorbitan with unsaturated or saturated, linear or branched fatty acids containing 12 to 22 carbons and/or hydroxycarboxylic acids containing 3 to 18 carbon atoms and addition products thereof with 1 to 30
  • Particularly preferred solubilizing agents are products of the addition of 1 to 30 moles of ethylene oxide and/or 0 to 5 moles of propylene oxide onto linear C 8 -C 22 fatty alcohols such as lauryl, myristyl, cetyl (palmityl), stearyl, oleyl, and ricinoleyl alcohols, or technical grade mixtures thereof such as cetostearyl alcohol or palmitoleyl alcohol.
  • linear C 8 -C 22 fatty alcohols such as lauryl, myristyl, cetyl (palmityl), stearyl, oleyl, and ricinoleyl alcohols, or technical grade mixtures thereof such as cetostearyl alcohol or palmitoleyl alcohol.
  • a thickening agent or viscosity-enhancing agent can be included to generally thicken the liquid pharmaceutical compositions.
  • a preferred thickening agent when used, includes one or more of acacia, alginic acid bentonite, carbomer, carboxymethylcellulose calcium or sodium, cetostearyl alcohol, methyl cellulose, ethylcellulose, glycerin, gelatin guar gum, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, maltodextrin, polyvinyl alcohol, povidone, propylene carbonate, propylene glycol alginate, sodium alginate, sodium starch glycolate, starch tragacanth, and xanthan gum, and any combination thereof. More preferred thickening agents are glycerin, hydroxypropylmethylcellulose, and xanthan gum, and any combination thereof.
  • wetting agents include one or more cationic surfactants, such as benzalkonium chloride; non-ionic surfactants such as polyoxyethylene and polyoxypropylene block copolymers; polyoxyethylene fatty acid glycerides and oils (such as polyoxyethylene (6) caprylic/capric mono- and diglycerides), polyoxyethylene (40) hydrogenated castor oil; polyoxyethylene sorbitan esters, such as polysorbate 20 and polysorbate 80; propylene glycol fatty acid esters, such as propylene glycol laureate; glyceryl fatty acid esters, such as glyceryl monostearate; sorbitan esters, such as sorbitan monolaurate, sorbitan monooleate, sorbitan monopalmitate and sorbitan monostearate; glyceryl fatty acid esters, for example glyceryl monostearate
  • the invention also provides a method for treating a subject afflicted with psoriasis; in particular, a method for treating a subject afflicted with plaque psoriasis or psoriasis vulgaris, guttate psoriasis, inverse psoriasis, erthrodermic psoriasis, psoriatic arthritis, scalp psoriasis and nail psoriasis; which comprises applying to the affected area of the skin of said subject an effective amount of 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid, or a pharmaceutically acceptable salt or N-oxide or solvate or deuterated derivative thereof, or a pharmaceutical composition as defined before.
  • the affected area of the skin affected by psorisis is selected from the group consisting of the eyelids, ears, mouth and lips, skin folds, hands and feet, and nails.
  • the skin at each of these sites is different and requires different treatments.
  • the method of using the topical pharmaceutical composition of the invention is by applying it to completely cover the affected area, forming an occlusive barrier.
  • the amount needed depends on the size of the lesion.
  • the invention further relates to the use of 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid, or a pharmaceutically acceptable salt or N-oxide or solvate or deuterated derivative thereof, for the manufacture of a medicament for the treatment of psoriasis; in particulary, for the manufacture of a medicament for the treatment of plaque psoriasis or psoriasis vulgaris, guttate psoriasis, inverse psoriasis, erthrodermic psoriasis, psoriatic arthritis, scalp psoriasis and nail psoriasis.
  • a rat model of epidermal hyperplasia was used to test the pharmacological activity of 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid.
  • Wistar rats 200- 250 g were obtained from Harland (Sant Feliu de Codines, Spain) and maintained in standard Chow diet with light:dark cycles and allowed to feed ad libitum during all procedures.
  • TPA (12-O-tetradecanoylphorbol-13-acetate) was purchased from Sigma Chemicals and a stock solution of 10 mg/ml was prepared in acetone.
  • FIG 1 shows histological score of the examination of epidermal areas treated with vehicle, TPA or the active ingredient 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid, as specified in the experimental procedure section.
  • Repeated acetone application (vehicle) induced a slight hyperplasia.
  • TPA induced a moderate hyperplasia that was reverted by topical once daily application of 1% of the active ingredient 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid.
  • FIG 2 shows the histological evaluation of epidermis collected at day 8 for uninduced (vehicle), picture A; induced (TPA), picture B; and treated (TPA + 1 % of active ingredient, after 7 applications), picture C.
  • magnification 100x.
  • TPA induced a slight mixed perivascular mononuclear infiltration composed of macrophages, lymphocytes and mastocytes (picture B), that greatly diminished upon topical treatment with 1 % of 2-[(3,5-difluoro-3'-methoxy-1,1'-biphenyl-4-yl)amino]nicotinic acid (picture C).

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EP11382356.1A 2011-11-21 2011-11-21 Acide 2-[(3,5-difluoro-3'-méthoxy-1,1'-biphényl-4-YL)aminonicotinique pour le traitement du psoriasis Withdrawn EP2594271A1 (fr)

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EP11382356.1A EP2594271A1 (fr) 2011-11-21 2011-11-21 Acide 2-[(3,5-difluoro-3'-méthoxy-1,1'-biphényl-4-YL)aminonicotinique pour le traitement du psoriasis
PCT/EP2012/073278 WO2013076170A1 (fr) 2011-11-21 2012-11-21 Acide 2-[(3,5-difluoro-3'-méthoxy-1,1'-biphényl-4-yl)amino]nicotinique destiné au traitement du psoriasis
ARP120104381A AR088943A1 (es) 2011-11-21 2012-11-21 Acido 2-[(3,5-difluoro-3-metoxi-1,1-bifenil-4-il)amino]nicotinico para el tratamiento de psoriasis

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WO2018160138A1 (fr) * 2017-03-02 2018-09-07 Aslan Pharmaceuticals Pte Ltd Inhibiteur de dhodh pour le traitement du cancer hématologique
US11311548B2 (en) 2017-03-02 2022-04-26 Aslan Pharmaceuticals Pte. Ltd. Cancer therapy

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WO2018160138A1 (fr) * 2017-03-02 2018-09-07 Aslan Pharmaceuticals Pte Ltd Inhibiteur de dhodh pour le traitement du cancer hématologique
US11311548B2 (en) 2017-03-02 2022-04-26 Aslan Pharmaceuticals Pte. Ltd. Cancer therapy
US11382903B2 (en) 2017-03-02 2022-07-12 Aslan Pharmaceuticals Pte. Ltd. Cancer therapy

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